import  numpy
import numpy as np
# arr1=numpy.arange(0,4)
# print(arr1)
# arr2=numpy.arange(1,10,2)
# print(arr2)
# arr3=numpy.arange(0,1,0.2)
# print(arr3)
# arr4=numpy.arange(5,0,-1)
# print(arr4)
# arr5=np.linspace(2,8,num=60,retstep=True,endpoint=False)
# print(arr5)
# arr6=np.linspace(1,2,num=180,retstep=True,endpoint=False)
# print(arr6)
arr7=np.logspace(2,8,num=5,base=2,endpoint=)
print(arr7)